Valve.



No. 821,507. PATENTED MAY 22, 1906. W. H. KLINE.

VALVE.

APPLICATION FILED JULY 13, 1904.

3 SHEETS-SHEET 1.-

PATENTED MAY 22, 1906.

. H. KLINE.

VALVE.

APPLICATION FILED JULY 13. 1904.

3 SHEETS-SHEET Z ANDREW. B GRAHAM co. PNOIO-LIYMOGVIAPIIiRS. msummou, Dc.

No. 821,507. 'PATENTED MAY 22, 1906.

W. H. KLINE.

VALVE. APPLICATION FILED JULY 13. 1904.

Parana orrron WILLIAM H. KLINE', O F DUNBAR; PENNSYLVANIA.

VALVE;

Specification of Letters Patent.

Patented May 22; 1906.

Application filed July 13, 1904. Serial No. 216,410.

enable others skilled in the art to which it ap pertains to make and usethe same, reference being had to the accompanying drawings,

and to the figures of reference marked thereon, which form a part ofthis specification.

My invention relates to valves, and especially to that class of valvesadapted for controlling the flow of a fluid under pressure, wherein thevalve is itself controlled by fluidpressure.

The object of my invention is to provide a valve especially for use inconnection with blowing-engines or air-compressors using the well-knownform of gridiron port-closures to control the flow of compressed fluidfrom the compressor to a storage-tank wherein the gridiron port-closureis operated by a cylinder and piston. My improved valve is de signed tocontrol the flow of a compressed fluid from the compressor to thevalve-actuating cylinder and piston, so that the portclosure will beopened to admit the flow of fluid from the compressor to the tank onlywhen the tension of the fluid in the compressor becomes equal to orgreater than the tension of the stored fluid in the tank.

It is well known that in the ordinary compressor the port-closure isoperated either mechanically and positively through the medium of aneccentric or is opened by the tension of the compressed fluid in thecompressor and closed positively through the medium of the eccentric. Itis also well known that in compressors where the port-closure is openedby the action of the compressed fluid the port-closure piston isoperated as soon as the tension of the fluid becomes sufficient to passthe usual check-valve located in the pipe which conducts the fluid fromthe compressor to the port-closure cylinder. In compressors suppliedwith such fluid-pressure-operated port-closure it is well known that theportclosure is opened before the pressure becomes as great as thepressure in the storagetank. It is desirable that the port-closureremain closed until the tension of the fluid in the compressor equalsthe tension of the fluid in the tank, so that the admitted fluid shalltion, size,

be of a tension similar to that already stored. My improved valve isheld in a closed state by the tension of the fluid in the tank until thefluid-pressure in the compressor becomes equal thereto, when it isautomatically opened to permit the introduction of fluid to theport-closure cylinder and against the piston operating the port-closure.

With these and other objects in view the present invention consists inthe combination and arrangement of parts, as will be hereinafter morefully described, shown in the accompanying drawings, and particularlypointed out in the appended claims, it being understood that changes inthe form, proporand minor details may be made within the scope of theclaims without de parting from the spirit or sacrificing any of theadvantages of the invention.

In the drawings, Figure 1 is an end elevation of a fluid-pump, showingthe cylinders containing pistons for operating the portclosures mountedwithin the pump body and my improved valve mounted thereon to controlthe flow of fluid from the pump to the cylinder. Fig. 2 is a sideelevation, partly in section, showing a compressor-engine with thegridiron port-closure for controlling the flow of fluid from the pump toa storage-tank and the manner of mounting and operating my improvedvalve. Fig. 8 is a detail plan view; Fig. 4, a detail section view; Fig.5, a detail side elevation of my improved valve, together with avertical section of the portclosure-operating cylinder and piston. Fig.6 is a detail side elevation showing the connection with thethrottle-valve of the compressor-engine and the means for holding myimproved. valve closed when the throttlevalve of the engine is closed.

Like characters of reference designate corresponding parts throughoutthe various views.

My improved valve is designed for use in connection with the ordinarycompressorengine 1, provided with a pump 2, within which a piston 3 ismounted to reciprocate. A tank 4 is provided in which is stored thecompressed fluid supplied thereto from the pump 2 through pipes 5.Within the pump are located the usual gridiron port-closures 6, mountedto reciprocate upon and in connection with the gridiron ports 7. Theportclosures 6 are operated by istons reciprocating within cylinders 8.F uid under tension is ordinarily supplied from the pump to the cylinderfor opening the port-closures 6, which are closed positively through themedium of the lever 9, connecting-rod 10, and eccentric 11. A pipe 12,connecting with the pump, conducts the compressed fluid to the cylinder8. Within this pipe 12 I locate my improved valve, consisting of avalvecasing 13, provided with a valve 15 is mounted within thevalve-casing 13, adapted to freely reciprocate and to en gage the seat14. Above valve 15 the casing is provided with a chamber 16 and a pipe17, leading into such chamber. The pipe 17 is connected with a linepipe18, connected with and adapted to conduct fluid from the storage-tank 4.Above the chamber 16 is rigidly secured to the casing an angular arm 19,upon which is pivotally mounted a lever 20. The lever 20 bears upon theupper end of a plunger 21, the lower end of which bears against theupper face of the reciprocating valve 15. My valves are preferablymounted in pairs, each adapted to admit compressed fluid to a cylinderlocated at opposite ends of the pump. The levers 20 are connectedpositively by a connecting-rod 22. A lever 23 is provided with a roller24 upon one end thereof and pivoted to any convenient stationary object,as the arm 25. The roller is so disposed as to contact with and beoperated by a disk 26, rigidly secured to and rotating with thethrottle-valve-operating hand-wheel 27. The end of the lever 23 oppositethe roller 24 is connected with the arm 20, so that the closing of thethrottle-valve will close and hold the valve 15 in such closed position.-A by-pass 28 is provided for the passage of the fluid around the valveand is provided with an ordinary check-valve 29, located therein.

The operation of my improved valve is as follows: The pipe 12 piercesthe wall of the pump and leads to the cylinder 8. The pipe 18 leads fromthe storage-tank 4 and into the chamber 16 above the reciprocating valve15.

g The upper face of the reclprocating valve 15 is thereby subjected to apressure from the compressed fluid in the tank 4 and held there bynormally seated. With a reciprocating movement of the piston 3 of thepump the fluid thereby becomes compressed, and the pressure acts againstthe lower face of the valve 15. When the tension of the compressed fluidin the pump becomes greater than the tension of the compressed fluid inthe tank, the pressure upon the under side of the valve 15 unseats suchvalve, permitting the passage of the compressed fluid through the pipe 12 into the cylinder 8. The compressed fluid in the cylinder 8 exertspressure upon the piston therein to slidably unseat gridironport-closure 6 to permit the passage of the compressed fluid through theport from the pump into pipe 5 and the tank 4. It will therefore be seenthat no fluid is advalve-seat 14. A

the reciprocating mitted to the pipe 5 and tank 4 of a less tension thanthe fluid already contained in the tank. Upon the completion of thestroke of the piston 3 the port-closure 6 is positively closed throughthe medium of the eccentric 11, rod 10, and lever 9 in the usual manner.With the return of the piston within cylinder 8 to the position to closethe port-closure 6 the compressed fluid used to operate such piston isusually permitted to escape. In my improved valve the mechanical andpositive return of the port-closure 6 to seat forces the fluid withinsuch cylinder through the by-pass 28 and check-valve 29.

While I have shown and described my valve in connection with ablowing-engine. or compressor, for which use it is primarily intended,it is evident that it could as well be used for any other purpose whereit is desired to control the flow of a fluid and maintain such flow at atension equal to the tension of a fluid from a diflerent source. It isalso obvious that minor changes in theform and construction of the valvemay be made by one skilled in the art without departing from the spiritof my invention.

Having thus described my invention, what I claim as novel, and desire tosecure by Letters Patent, is.

-1. In a device of the character described, a storage-reservoir, afluid-compressor provided with a port to admit fluid under pressure fromthe compressor to the reservoir, a portclosure adapted to control theflow of the fluid through the port and from the compressor to thereservoir, a piston adapted to operate said port-closure, a cylinder inwhich said piston is mounted to reciprocate, a pipe disposed to admit afluid under pressure from w the compressor to the cylinder to operatethe piston, a valve located in said pipe and means for admitting a fluidfrom the reservoir to hold the said valve normally closed, the partsbeing so disposed that when the tension of the fluid in the compressorexceeds the tension of the fluid in the reservoir, the valve is openedto admit fluid to the cylinder.

2. In a device of the character described, the combination of areservoir for the storage of compressed fluid, a fluid-compressorprovided with a port to admit 'the compressed fluid from the compressorto the reservoir, a port closure, a cylinder, .a piston within saidcylinder connected with and adapted to operate said port-closure, a pipeto conduct a compressed fluid from the compressor to the cylinder, areciprocating valve disposed in said pipe and a pipe connected with thereservoir and adapted to admit fluid under reservoir-pressure to theupper side of the reciprocating valve to hold said valve normally seateduntil the fluid in the compressor assumes a greater tension than thefluid in the reservoir.

3. A device of the character described,

comprising in combination a reservoir for the storage of compressedfluid, a fluidcompressor provided with a port-closure adapted to controlthe flow of said compressed fluid from the compressor to the reservoir,a cylinder, a piston mounted Within said cylinder and secured to andadapted to operate said portclosure, a pipe to conduct the compressedfluid from the compressor to the cylinder, a reciprocating valvedisposed in said pipe, a pipe connected with the reservoir and adaptedto admit fluid under reservoir-pressure to the upper side of thereciprocating valve to hold said valve normally seated until the fluidin the compressor assumes a greater tension than the fluid in thereservoir and a by-pass provided with a check-Valve adapted to permitthe return-passage of the compressed fluid from the cylinder around thevalve. 1

4:. A device of the character described, comprising in combination, areservoir for the storage of compressed fluid, a fluid-compressorprovided with a port to permit the flow of fluid from the compressor tothe reservoir, a port-closure adapted to control the flow of compressedfluid through the port, a cylinder, a piston mounted within saidcylinder and connected with and adapted to operate the port-closure, apipe to conduct compressed fluid from the compressor to the cylinder, areciprocating valve disposed in said pipe, a pipe connected with thereservoir and arranged to admit fluid under reservoir-pressure to theupper side of the reciproeating valve to hold said valve normally seateduntil the fluid in the compressor assumes a greater tension than thefluid in the reservoir, means connected with the pump starting mechanismwhereby the stopping of the compressor holds the reciprocating valveseated and means to permit the return-flow of the fluid from thecylinder around the valve.

5". A device of the character described, comprising in combination, acylinder, a piston within the cylinder, a storage-reservoir, acompressor provided with aport to permit the flow of a compressed fluidfrom the compressor to the reservoir, a portclosure connected to andoperated by the piston, a pipe to conduct a fluid from the compressor tothe cylinder to operate the piston and open the portclosure, areciprocating valve disposed in said pipe, means for conducting a fluidunder reservoir-pressure from the reservoir to hold the reciprocatingvalve normally closed, but adapted to be opened by the fluid in the pipewhen the tension thereof becomes greater than the tension of the fluidin the reservoir, means for mechanically returning the piston and meansto permit the fluid in the cylinder to flow back to the compressor andaround the reciprocating valve upon the return. of the piston.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM H. KLINE. Witnesses:

JOHN KURTZ, MICHAEL J. FITZGERALD.

